5975-99-201-4460, ROD, EARTHING National Stock Number (NSN) : 5975-99-201-4460 Description: small (relatively speaking ! ) steel earthing rod as used on smaller military vehicles and equipment. pointy bit at one end, thicker head at other, with a threaded bolt welded 65mm down from the top, suitable for acceping any cable terminated in an eye ring of 7mm minimum ID. Suit military vehicle restorer / radio ham. length : 500mm diameter (shaft): 20.7 mm diameter (head) the bit you hit with a mallet: 28.6mm